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Issue 8, 2002
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Abstract

Synthesis, crystal structures, linear and nonlinear optical properties of tris D–π–A cryptand derivatives with C3 symmetry are reported. Three fold symmetry inherent in the cryptand molecules has been utilized for designing these molecules. Molecular nonlinearities have been measured by hyper-Rayleigh scattering (HRS) experiments. Among the compounds studied, L1 adopts non-centrosymmetric crystal structure. Compounds L1, L2, L3 and L4 show a measurable SHG powder signal. These molecules are more isotropic and have significantly higher melting points than the classical p-nitroaniline based dipolar NLO compounds, making them useful for further device applications. Besides, different acceptor groups can be attached to the cryptand molecules to modulate their NLO properties.

Graphical abstract: A new class of three dimensional D–π–A trigonal cryptand derivatives for second-order nonlinear optics

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The article was received on 19 Mar 2002, accepted on 09 Apr 2002 and first published on 15 May 2002


Article type: Paper
DOI: 10.1039/B202770B
J. Mater. Chem., 2002,12, 2237-2244

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    A new class of three dimensional D–π–A trigonal cryptand derivatives for second-order nonlinear optics

    P. Mukhopadhyay, P. K. Bharadwaj, G. Savitha, A. Krishnan and P. K. Das, J. Mater. Chem., 2002, 12, 2237
    DOI: 10.1039/B202770B

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